Stuck at BIOS splash (post) screen after BIOS recovery. Help!

Mike486DX

Distinguished
Sep 22, 2014
52
0
18,640
Hi,

Long story short, my build uses an old OEM motherboard I extracted from a shop bought PC. Everything else is new except the hard drive, which again is from the my old OEM.

The specs are as follows:

Intel i7-870 (2.9 - 3.6ghz)
8GB DDR3 RAM (2 x 4gb)
1 x DVD Multi RW
1 x SATA 7200rpm 240gb HDD
NVIDIA GTX 970
Windows 7 x 64

Now since buying the GTX 970 I hadn't noticed much of a rise in performance, so to overcome what I believed was a processor bottleneck holding back my new card, I went about a processor overclock. Unfortunately, being an OEM motherboard there was no FSB or voltage control in the BIOS. I found an unlocked version of my BIOS online, and decided to download and flash.

I made the schoolboy error of not making a backup BIOS. I flashed the new settings, restarted the PC - and hey presto, it was BRICKED. No post, no beeps, nothing. The rig and fans switched on, but a blank screen.

Fortunately, I was able to find a manufacturer BIOS update for my board. I downloaded it and used the BIOS recovery USB method to flash the original BIOS. I thought I was saved when the repair utility came up, destroyed the bad BIOS and flashed the new one.

The machine restarted, and is now stuck on the BIOS splash screen. They keyboard has power but the usual splash screen commands don't work (press DEL to enter setup) does nothing, CTR+ALT+DEL does nothing. All I can do is hard turn off the machine.

When I reboot, I still can't get past the BIOS post screen.

I'm getting very nervous now. I have tried the following:

- Booting with only 1 RAM module. Didn't work.
- Booting with no RAM. Got the corresponding error beeps and failed post.
- Booting with everything disconnected except RAM and CPU. Didn't work.
- Booting with a different CPU chip. Didn't work.
- Booting with all peripherals disconnected. Didn't work.
- Booting with a low-profile graphics card instead of the 970. Didn't work.
- Checked RAM slots, no dust or debris.

All I ever get is the BIOS welcome screen.

Can anybody help? I really am desperate to get this thing back up, the LGA1156 board is hard to come by and I'm looking at being without a PC for the foreseeable.
 
Solution
Hi

before scrapping motherboard I would double check you had correct bios for the OEM motherboard.

It looks like you have followed most of the sequence on the FAQ
http://www.tomshardware.co.uk/forum/261145-31-perform-steps-posting-post-boot-video-problems


Intel and Foxcon etc makes motherboard for other companies and each Brand has their own BIOS
(partly to lock OEM Windows to the motherboard.)

Look at motherboard carefully to see if there is a model followed by version 1, 2 or 3 etc
(which may need a different bios)

Check PSU voltages just incase this is your problem
connect volt meter to spare molex connector 5V on red - black 12V on yellow - black (tolerance 5%)

ensure ATX 12V CPU 4 or 8 pin connector is in its...
I don't think clearing the bios would even help or remove the battery for like 20 mins you could try to contact the company and see if they have any bios chips you could replace yours with if that possible. Otherwise I think you brick it for good.
 
Hi

before scrapping motherboard I would double check you had correct bios for the OEM motherboard.

It looks like you have followed most of the sequence on the FAQ
http://www.tomshardware.co.uk/forum/261145-31-perform-steps-posting-post-boot-video-problems


Intel and Foxcon etc makes motherboard for other companies and each Brand has their own BIOS
(partly to lock OEM Windows to the motherboard.)

Look at motherboard carefully to see if there is a model followed by version 1, 2 or 3 etc
(which may need a different bios)

Check PSU voltages just incase this is your problem
connect volt meter to spare molex connector 5V on red - black 12V on yellow - black (tolerance 5%)

ensure ATX 12V CPU 4 or 8 pin connector is in its socket

Remove graphics card , unplug hard drives etc.
(leave cpu + heatsink fan + 1 DIMM connected + screen + keyboard & mouse)

connect screen to integrated graphics chip socket

after re flashing bios, shut down, remove power lead, set reset cmos jumper.
replace jumper to correct run location

Try booting up & getting into BIOS to reset defaults

If all this fails look for a suitable replacement motherboard on Amazon

regards
Mike Barnes
 
Solution