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Author Topic: The Generic Computer Advice Thread  (Read 184653 times)

deathpunch578

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Re: The Generic Computer Advice Thread
« Reply #3570 on: December 04, 2017, 12:59:20 pm »

okay so my computer isn't getting internet, it's been doing this since the last windows 10 update.
whats happening is it either won't connect to any internet source or when it is connected it's saying there is no internet. I've deleted my wifi drivers and reinstalled them, but the problem persists. any help
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smjjames

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Re: The Generic Computer Advice Thread
« Reply #3571 on: December 04, 2017, 04:42:01 pm »

What's a good antivirus to use since apparently Webroot sucks as an antivirus? Someone else suggested Avast or Malwarebytes.

Avast seems pretty good as a free antivirus...
« Last Edit: December 04, 2017, 05:45:02 pm by smjjames »
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Tellemurius

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Re: The Generic Computer Advice Thread
« Reply #3572 on: December 04, 2017, 08:58:18 pm »

Avast is great as long as you aren't already infected, its light enough it won't take up your system resources during scans.

deathpunch578

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Re: The Generic Computer Advice Thread
« Reply #3573 on: December 05, 2017, 11:50:21 am »

okay so my computer isn't getting internet, it's been doing this since the last windows 10 update.
whats happening is it either won't connect to any internet source or when it is connected it's saying there is no internet. I've deleted my wifi drivers and reinstalled them, but the problem persists. any help
let me be more specific, the wifi works on everything else just not my computer.
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Someone hands you a basketful of Jeses.
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You ever get so mad you fuck a donkey?

Lord Shonus

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Re: The Generic Computer Advice Thread
« Reply #3574 on: December 05, 2017, 01:32:50 pm »

Try connecting via cable. That will signficantly reduce the number of possible issues, one way or another.
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deathpunch578

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Re: The Generic Computer Advice Thread
« Reply #3575 on: December 05, 2017, 02:59:37 pm »

I can't use a ethernet cable, I would have to move the router and that would require paying someone to move everything. the wifi was working before, but the new windows update borked it, so i just need to get it working again.
if anyone is wondering (and if it helps) I can open up my computer and see what my wifi adapter is (don't know off the top of my head)
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Someone hands you a basketful of Jeses.
Cheerful with a side of wink wink nudge nudge I bet this guy's spine would look great mounted on my wall.
You ever get so mad you fuck a donkey?

Greiger

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Re: The Generic Computer Advice Thread
« Reply #3576 on: December 06, 2017, 03:31:23 pm »

If you have the means to, try to connect to another wifi, even just an unsecured one for testing purposes and see if it can get out.  If it does you may need to clear the network name out of your settings and reconnect fresh(reinstalling the driver should have done that, but a good Idea to double check anyway).  If that still does not work I'd check to see if the router had a reserved IP for your computer's MAC address and clear it out to give the whole thing another shot at connecting fresh. (or if the reserved IP can't be changed for some reason, make sure your computer is set to use that IP and not another one)

Another possibility, is to see if your wifi adapter is some kind of Atheros.  For some reason, at least around 1 year ago when I worked for comcast tech support, we got a memo from research about Atheros drivers that stop working with your symptoms under windows 10 after updates.  If that ends up being the case you might want to try to see if you can update the driver.

Unfortunately if that is the case, that's all the info I know.  That problem was always out of our scope to fix, and the higher ups were rightfully afraid of giving us too much info on the causes of out of scope problems because they were worried we would spend too much time trying to fix it instead of focusing on the routers like we were supposed to.
« Last Edit: December 06, 2017, 03:37:02 pm by Greiger »
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deathpunch578

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Re: The Generic Computer Advice Thread
« Reply #3577 on: December 06, 2017, 08:25:09 pm »

problem is fixed, the adapter was inside of my computer and wasn't getting signals (because dumb reasons) I moved it out of my computer now its working fine.
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Someone hands you a basketful of Jeses.
Cheerful with a side of wink wink nudge nudge I bet this guy's spine would look great mounted on my wall.
You ever get so mad you fuck a donkey?

Lord Shonus

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Re: The Generic Computer Advice Thread
« Reply #3578 on: December 20, 2017, 02:52:47 pm »

My Linux box seems to have ruined itself for no apparent reason. All I did was reboot the thing, and now it gets a mount point fail (for the secondary partition on the hard drive) and the message


Welcome to emergency mode! After logging in, type "journalctl -xb" to view
system logs, "systemctl reboot" to reboot, "systemctl default" to try again
to boot into default mode.
cannot boot - root account is locked
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wierd

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Re: The Generic Computer Advice Thread
« Reply #3579 on: December 20, 2017, 05:33:40 pm »

In recovery mode, run fsck on the hosting Dev block device for that partition.

Sounds like a dirty shutdown happened.
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Lord Shonus

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Re: The Generic Computer Advice Thread
« Reply #3580 on: December 20, 2017, 05:43:02 pm »

Wasn't possible. The only thing I was able to get into was GRUB, because root was locked and blocked booting entirely.

 I was able to solve it by burning a new Live CD on my Windows box and using it to edit the FSTAB file manually. The problem was that there were two entries for that partition, so when it tried to mount the second one it ran into a "partition already mounted" error.


Now the question is: how can I unlock the root account so I can fix errors like that more easily?
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My new 3.5 D&D campaign. Now Recruiting!
Man, ninja'd by a potentially inebriated Lord Shonus. I was gonna say to burn it.

wierd

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Re: The Generic Computer Advice Thread
« Reply #3581 on: December 20, 2017, 05:47:34 pm »

You can often invoke single user mode from grub. That boots to a root shell.

https://askubuntu.com/questions/132965/how-do-i-boot-into-single-user-mode-from-grub
« Last Edit: December 20, 2017, 05:49:46 pm by wierd »
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Larix

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Re: The Generic Computer Advice Thread
« Reply #3582 on: December 29, 2017, 11:11:34 am »

Just out of curiosity: is it plausible that a CPU with too high TDP fries an underspecced motherboard?

My old desktop became flaky last year, clearly overheating something (judged by smell) until crashing.
Spoiler (click to show/hide)

I took the thing apart and looked at it closely over the last few days, and some circuitry very close to the socket looks sort of... caramelised. Some guessing and web searching shows it's all full of hefty el-caps, power mosfets and throttles, so i suspect it's stuff that provides power to the CPU.
The CPU is an AMD 64 X2 with an ADXnnn identifier - i.e. a 125W TDP processor and the handbook of the motherboard says it can only handle up to 95W TDP; so the OEM slotted in an over-hungry CPU (good job!). The computer worked reliably for ~6 years before getting toasty, which feels plausible for a slightly overburdened circuitry holding up but with significantly reduced life expectancy.

Nothing else in there looks really suspect (no bulging capacitors, no other charred/tanned spots on the board), so is this a likely event? I've just been wondering what exactly messed up the thing. Considering it was a really cheap pre-assembled desktop in 2009 or /10, repairing's out of the question and even the spare part value is strictly self-use or donation.
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wierd

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Re: The Generic Computer Advice Thread
« Reply #3583 on: December 29, 2017, 06:39:11 pm »

Many motherboards put a bunch of lytic capacitors all around the cpu socket.  Those contain liquid electrolyte, which will vaporize if it gets hot enough.  Look for barrel shaped metal cans near the CPU, and look to see if the tops are bulged, or if orange goo has leaked out.
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Larix

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Re: The Generic Computer Advice Thread
« Reply #3584 on: December 29, 2017, 08:09:07 pm »

I took a second look through the elkos and they all look normal, no bulging, no leakages. The only suspicious thing on visual inspection are the solder points of the power mosfets, which have a brownish sheen. That's why i guessed it might have been the overspecced processor drawing more juice than the transistors could safely deliver, wearing them out over the years. The effect is visible on three of the four mosfets around the CPU socket and not on transistors installed anywhere else on the mobo.

It was a very gradual, almost "soft" failure, as described - the computer could be rebooted and worked normally after rebooting at first. Only after several weeks did it fail to reboot properly. The faint but distinct burnt smell was a clear sign it was a heating issue, and getting the dust out of the fan and radiators made no difference, suggesting it wasn't the processor which was getting too hot.

As mentioned, it's mostly curiosity/diagnostic interest. I'm not likely to buy another machine from that manufacturer anyway, but if their poor system composition actually reduced the lifetime, it'd be pretty damning.
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