Computer doesn't always post.

deltaluca · 14 Jun 2011 at 15:14

This happened once a month or so back, where i had to try multiple times before the computer would get to the bios post screen (everything powering up, just no post beep or screen etc)

A couple days ago i flashed my BIOS, and now it's happening all the time. It happens when turning computer on, or even if computer is suspended and resumed; occasionally it will post first time in a normal amount of time, but sometimes it can take me up to 10 minutes of waiting a while to check if it eventually posts, and then forcing it to power down and turning it on again until it posts.

ONCE it posts, computer is perfectly fine and shows no negative symptoms, running (Aslong as i don't suspend it) for +10 hours (never tried longer).

Any ideas?

andy_mk3 · 14 Jun 2011 at 15:17

Full PC spec?

Buchanan0204 · 14 Jun 2011 at 15:20

Seen this a million times. New PSU time

http://www.overclockers.co.uk/showproduct.php?prodid=CA-042-BQ&groupid=701&catid=123&subcat=1083

deltaluca · 14 Jun 2011 at 15:23

gigabyte ma770-ud3 rev. 1 w/ bios version f9g
amd phenom II x2 550 black ed.
2x2gb ddr2 ocz (platinum i think)
geforce 9600gt
ocz 600w stealth something psu

deltaluca · 14 Jun 2011 at 15:25

i guess i can try swapping known working psu first, though I think i'll wait until i next power down as I need to get on with some work.

Buchanan0204 · 14 Jun 2011 at 15:42

deltaluca said:
i guess i can try swapping known working psu first, though I think i'll wait until i next power down as I need to get on with some work.

Of course

Stick a working one in and see how it goes. Just to be sure.

Boozebeard · 14 Jun 2011 at 15:45

Make sure all the PSU connectors are plugged in properly. Seen a similar problem and it turned out the main 24pin connector just wasn't quite in properly.

Kelt · 14 Jun 2011 at 15:49

Could be a faulty bios flash. Had something similar happen to me, needed a new bios/flash to recover. I would try using a different bios or reflash first up.

Buchanan0204 · 14 Jun 2011 at 17:45

KelticDaz said:
Could be a faulty bios flash. Had something similar happen to me, needed a new bios/flash to recover. I would try using a different bios or reflash first up.

It was happening before the BIOS flash.

spleenharvester · 14 Jun 2011 at 17:58

Try a spare PSU by all means, but until you confirm yours faulty, don't buy another.

Anyways, reset BIOS defaults, set RAM timings manually, try sticks of RAM individually. Does it POST if left for a long time (few minutes or so)? Do you get any graphical errors such as artifacting?

hanluc · 14 Jun 2011 at 18:02

Similar to what I had a few years, power supply was the problem

deltaluca · 14 Jun 2011 at 18:22

bios defaults were set when bios was flashed, and it started happening before i changed them at all. It's unlikely that ram could be the issue; i had issues in the past with the ram and had them thoroughly tested, including the one sent back when one was replaced for faults.

Sometimes it does post if i'm patient enough after a few minutes, usually i restart and try again before it gets to be that long

there are no graphical artifacts or ANY issue at all once it posts, it's simply getting to the post which it has issues with.

I'm going to try checking connections / if that fails trying a different psu later tonight.

---

As someone pointed out this happened before i flashed the bios (though only once or twice, whereas now it's every time virtually)

spleenharvester · 15 Jun 2011 at 01:38

In that case, reseat all PCI/PCI-E cards and run without the essential stuff attached, see if it gets past POST. I've found if it POSTs eventually, according to my PCI diagnostics card thing, it's usually having trouble initializing either add-on cards or the RAM.

Thejay · 15 Jun 2011 at 01:42

deltaluca said:
gigabyte ma770-ud3 rev. 1 w/ bios version f9g
amd phenom II x2 550 black ed.
2x2gb ddr2 ocz (platinum i think)
geforce 9600gt
ocz 600w stealth something psu

Had the same PSU it did the same thing you're describing give it a bit longer and it'll more than likely give up completely.... Go with what others have said and try borrow a spare PSU to test it with.

Buchanan0204 · 15 Jun 2011 at 01:43

spleenharvester said:
In that case, reseat all PCI/PCI-E cards and run without the essential stuff attached, see if it gets past POST. I've found if it POSTs eventually, according to my PCI diagnostics card thing, it's usually having trouble initializing either add-on cards or the RAM.

BUY ME PLEASE!!!

armed_gorilla · 15 Jun 2011 at 01:46

I may get shot down in flames for this but you dont say what h/drive your running. Its not an OCZ SSD is it? I've had some similar problems recently, since i've removed the drive i've had 0 problems at all. I had the same with it turning on but not booting, no post beep etc.

Buchanan0204 · 15 Jun 2011 at 02:04

armed_gorilla said:
I may get shot down in flames for this

Nonsense. We're all civilized here

spleenharvester · 15 Jun 2011 at 10:43

Buchanan0204 said:
http://www.gigglepedia.com/gigglepedia/gallery/album/Celebrities%20-%20Yawning/boris-johnson-yawn.jpg[IMG]
[COLOR="Yellow"][SIZE="7"]
[URL="http://www.overclockers.co.uk/showproduct.php?prodid=CA-042-BQ&groupid=701&catid=123&subcat=1083"]BUY ME PLEASE!!![/URL][/SIZE][/COLOR][/QUOTE]

I've actually seen more no-POST cases as motherboard failure than PSU :p

andy_mk3 · 15 Jun 2011 at 10:48

Buchanan0204 said:
http://www.gigglepedia.com/gigglepedia/gallery/album/Celebrities%20-%20Yawning/boris-johnson-yawn.jpg[IMG]
[COLOR=Yellow][SIZE=7]
[URL="http://www.overclockers.co.uk/showproduct.php?prodid=CA-042-BQ&groupid=701&catid=123&subcat=1083"]BUY ME PLEASE!!![/URL][/SIZE][/COLOR][/quote]

Surely some diagnosis is better than throwing £40 at something straight away?

Buchanan0204 · 15 Jun 2011 at 11:19

spleenharvester said:
I've actually seen more no-POST cases as motherboard failure than PSU

Fair enough. However, it will POST... just not all the time. Which indicates a failing PSU.

I see the same thing at least twice a week, every week. It wont turn on, fans spin up but nothing on monitor. You take the plug out, leave it for 5 mins. Come back and it works, when it's on it's fine. Same thing the next day. It's a sign of a failing PSU.

I hope no one is taking offence to my posting style. It's just all harmless fun and I don't mean to cause offence or belittle anyones knowledge. I know 99% of people on here have forgotten more than I will ever learn. Yourself included no doubt.