Cannot boot - nothing works

wWooDd

Member
Oct 24, 2005
45
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My computer has been running fine for the last few months - the only issues have been hard drive issues. I was browsing the internet when the screen stutters & goes blank - the typical system crash. I restart and nothing happens - which I should elaborate; nothing happens. No POST screen, not even a beep for issues. In fact, I thought my vid card came unseated so I took it out & started the computer (to humor my self to see if I could get a noise) and nothing happens. I have no idea what to do or what could of caused this since I have had no issues or degrade in performance. Beyond the bios battery, is there any thing else I can try to bring my computer back to speed? I really do not have any ideas right now.

Thanks in advance!
 

TC10284

Senior member
Nov 1, 2005
308
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First off, try another known working power supply in that system.
Let us know if that helps or doesn't.
 

wWooDd

Member
Oct 24, 2005
45
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0
I don't have any PSU's on hand at the moment - is there any thing else I can do in the mean time?
 

WildHorse

Diamond Member
Jun 29, 2003
5,006
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wWooDd,

Please post the make & model of these items; motherboard, cpu, psu, video card, ram.

is there any thing else I can do in the mean time?
Your failure sounds like a power supply issue.
Make sure the PSU's On switch is in the On position.
Make sure the electrical sockets you plug into will light a lamp.
If not, see if the circuit breaker supplying electricity to the wall sockets has tripped & needs resetting.

Meantime, in general, you might try process of elimination:

a) GROUND yourself,

b) Strip everything out of the motherboard, including ram, cpu, gpu, any other add in cards. Set them aside on a non-conductive nonstatic surface, perhaps on wood or cardboard.

Check to make sure there are no stray screws or loose conductive items accidentally lodged underneath the motherboard, between its underside & the metal case. Maybe a stray standoff post or screw has been under there a long time & only now had a tiny movement into a short-out position due to heat expansion or a slight bump to the case.

c) Try turning on power to the bare motherboard.

Can you can hear any beeping sounds?
Audible beeps (the beep codes) indicate the mobo is getting power from the psu.
Doesn't mean "O.K.", but at least is an indication in that direction.

d) Next be sure the heatsink & fan are properly seated onto the cpu. Any tiny misalignment between them can cause boot failure due to cpu overheating emergency shutdown. I learned that one the hard way!

Then plug in the cpu AND the cooling fan to its header on the mobo & repeat power-on test.

If the fan runs & you can hear the beep codes, probably a different pattern of beeping this time, that again is a favorable indicator.

e) Next add JUST ONE stick of RAM & repeat.

f) Now before you plug in your video card, try to boot into bios. If your motherboard has a hotkey to force loading of bios defaults while booting, do that. For example, if you have a DFI mobo try holding down the "Insert" key continuiously while booting. Other brands have different ways.

If you can boot into bios, go through all its settings and put every setting at the default value, save the defaults & exit bios.

g) Now add your video card & see if you can boot into your OS, e.g. Windows or Linux.

h) Once you succesfully boot, add your other sticks of RAM if any, & again try to reboot into the OS.

Remember that you're grounded all this time!

i) Run diagnostics.

Since you posted here you must have ability to download the diagnostics you like to use.
The main ones I find helpful are ITE SmartGuardian to monitor temperatures, Memtest86 for RAM, OCCT! 30 minute torture test for quick stability check, and SP2400 for 24 hours, which is same as Prime95 but with a user-friendly GUI.

Remember: Please post the make & model of the motherboard, cpu, psu, video card, ram.
 

wWooDd

Member
Oct 24, 2005
45
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I removed every thing from the Mobo, which is completely bare now, and I get no audible beeps or error codes. Power does run to every thing, fans work - the monitor gets a signal from the GPU - just nothing loads. I did find a spare PSU but I believe it was too old to work - all I ever got was a quick blink from an LED and no power on. Albiet it is about 6 years old & 250w, but Im going to try it on the bare mobo.

I did experience some thing strange earlier - about the time I tried the spare PSU for the first time. The tower would not power on at all if I had removed hardware - more specifically I couldn't get it work with out any ram sticks. Put a stick in and the machine powers up. More or less the machine was really finicky about what was on it.

Im working up to a Mobo failure but Im not sure what you guys think. I will be going to a good friend & shop owner tomorrow who will straighten this out - but more I figure out now the less he has to do.
 

wWooDd

Member
Oct 24, 2005
45
0
0
Never mind, definate mobo faliure

While I was going through the mobo I found a bad capacitor - which is an understatement. It looked as if it leaked & squirted over a couple other capacitors which is a no brainer.

So, looks like a new mobo & new PSU for me, *glee!* Too bad I cant do it because I just put a huge sum of money towards the new machine :(
 

WildHorse

Diamond Member
Jun 29, 2003
5,006
0
0
Originally posted by: wWooDd
Never mind, definate mobo faliure

While I was going through the mobo I found a bad capacitor - which is an understatement. It looked as if it leaked & squirted over a couple other capacitors which is a no brainer.

So, looks like a new mobo & new PSU for me, *glee!* Too bad I cant do it because I just put a huge sum of money towards the new machine :(

I hope you're successful in getting replacements under a warranty claim.

Good luck to you!