0
votes
1answer
37 views

Desktop computer rebooting after ~3 hours

My desktop computer, less than a year old, has started rebooting automatically (as if power was suddenly lost and immediately restored), after ~3 hours of running. After the first reboot in ~3 hours, ...
0
votes
1answer
45 views

BIOS troubleshooting - how it become corrupted?

Recently I was repairing two computers: 8+ years old core 2 duo, and 1 year old core i3. Both had problems with booting. First one: no video output, no beeps, leds & fans on, second one: no video ...
0
votes
1answer
30 views

PC resets triggered by vibration

Having trouble with a PC that resets frequently (monitors turn black, then BIOS boot up screen appears a few seconds later). The cause appears to be vibration; in fact I can tap the case in a ...
0
votes
1answer
27 views

Persistent issue with PC that won't boot

My PC refuses to boot. The power switch lights up and the fans spins, but it doesn't boot. Usually this happens for long stretches of time and then sometimes it magically boots after a few restarts, ...
-1
votes
1answer
69 views

How to determine why computer won't turn on? [closed]

I have a PC that I built myself (parts list). It has for a number of months refused to turn back on after there's a power failure. I've had to pull the plug out of the back, and then plug it back in ...
0
votes
1answer
258 views

IRQL_NOT_LESS_OR_EQUAL BSOD in NDIS.sys, with MemTest passing - what's the cause?

I just got a Blue Screen of Death with IRQL_NOT_LESS_OR_EQUAL, in NDIS.sys. My hardware: Intel P4 Northwoord 2.4 GHz Intel D850EMV2 board 4 x 256 MB RDRAM other stuff Context: Computer was ...
0
votes
0answers
44 views

Windows crash on new Hard Drive that was never formatted

I installed a new hard drive after someone removed the OS from my old drive thinking I would eventually slave the two together to recover my data. Unfortunately the new disk keeps crashing and I ...
0
votes
2answers
610 views

What can cause Internet connection to randomly fail?

From time to time, web pages don't open or open slowly, downloading big files stop after a few KB or MB (no errors are thrown, just no data is received). Sometimes it works, sometimes it doesn't ...
3
votes
3answers
2k views

Why has my computer started to make noises when I turn it on after I put it into sleep mode for the first time a week ago?

I would usually have my pc on all day and fully shut it down at night time before I went to bed. I decided to put it into sleep mode instead the other day and everything was fine but when I woke it ...
1
vote
1answer
9k views

Why does my monitor have a black screen but the power light is blinking green?

I have a ViewSonic VA912b 19" display I use as a secondary monitor. When I turn it on, the power light is green for a few seconds, and then switches to blinking green. The display stays black. ...
4
votes
1answer
441 views

Computer began freezing after lightning storm. Replaced most of it, and still getting random freezes. What next?

My machine started freezing (no blue screens, no warnings) after about 30 minutes to two hours of use after a bad lightning storm that also knocked out my router. I've replaced the motherboard, RAM, ...
1
vote
2answers
180 views

Troubleshooting a slow startup

The one really rattles the brain. The computer was "slow", which is why I was called out in the first place. The first thing I noticed was that it took literally 3-4 minutes to turn on. This is a ...
0
votes
0answers
70 views

High RAM after USB port shortcircuit

My Computer was displaying "USB Device Over Current Status" at startup and wouldn't boot. I believed the issue was related to a damaged USB port on the case - potentially shortcircuiting?. I ...
3
votes
3answers
5k views

Transcend External hard disk: continuous beeping

I have a 500GB Transcend StoreJet external HDD. The problem is it beeps for long time. When it beeps I can not access the drive. Even sometime I can, I dont see full file listing or empty folder! It ...
0
votes
0answers
178 views

DVD-RW does not read regular CDS/DVDs on Vista

I have a dell vostro 1510 laptop with windows vista. It has an "Optiarc DVD+-RW AD-7640A ATA Device" installed which used to work find. My vista has two user profiles on it. Now when I insert a ...
0
votes
1answer
118 views

PC frozen at startup, not booting

I am trying to fix my Gateway desktop. About 6 months ago it stopped working and since then I started using a laptop. But now I want to fix it since it's much more powerful than my laptop. The ...
0
votes
0answers
40 views

Troubleshooting Computer Failure

I'm usually pretty good at this but I'm a bit confused. I'm on the internet and my computer turns off randomly. Okay, just turn it back on. Boots into bios just fine. No errors or warning signs. ...
2
votes
1answer
949 views

Troubleshooting “Verifying DMI pool data” hang

Last night after resolving a hijacked hosts file issue on my Vista desktop, I got a bluescreen (that I couldn't catch the details of) and my machine rebooted. Recently I've been having "Display driver ...
2
votes
0answers
674 views

Which hardware component is causing graphics driver crash? [duplicate]

Possible Duplicate: Which component causes my graphics driver to crash? This is an update of Which component causes my graphics driver to crash? - I have still not found the culprit. ...
6
votes
4answers
327 views

Troubleshooting an mysteriously unstable machine

I have a machine with a Core i7 CPU, 12 GiB of memory, 4 hard drives and a graphics card/sound card (both add-in PCI-E). This machine is somehow unstable, and I'm wondering how to troubleshoot ...
3
votes
4answers
1k views

Diagnosing computer freezes

Background: New system build, new components, Windows 7. Detail build below. Symptoms: Complete system freeze/lock - no mouse movement, no keyboard lights, everything on-screen freezes - no ...
5
votes
4answers
1k views

PC freezes after repeated clicking noises

I have an oldish PC (Athlon XP 2200, WinXP). Every time I switch it on, I hear a loud "click" first of all, and when it is shut down, again a click is the last sound I hear. Lately it started to ...
2
votes
4answers
2k views

Computer won't POST after power outage

I had just turned my computer on and windows was loading when the power in my neighborhood went out. Normally, when I turn my computer on, the video card fan spins up, then slows down, POST and ...