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Help with new build bios issue

Last response: in Motherboards
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February 16, 2011 3:00:21 PM

I have just built a computer.

Inter DP55WG MB.
Intel i5 650 processor.
Corsair CMPSU-750TX 750-Watt TX Series PSU.
Kingston Technology HyperX 4 GB Kit (2x2GB Modules) 1600 (PC3 12800) 240-Pin DDR3 SDRAM

KHX1600C7D3K2/4GX.
ASUS AMD Radeon HD 6870 1 GB GDDR5 Video Card EAH6870/2DI2S/1GD5.
Western Digital 1 TB Caviar Green SATA Intellipower 64 MB Cache Hard Drive WD10EARS
LiteOn iHBS212 - Disk drive - BD-RE - 12x2x8x - Serial ATA - internal - 5.25" - LightScribe

At first the bios would hang with a Post of 4h. The computer would boot as soon as I

plugged in the power supply. After it hung, it would reboot and the cycle would continue

indefinately. Researching, people with the 4h hang in the boot said I needed to update the

bios to accomodate the i5 processor. Because I could not get to the bios screen, I pulled

the bios pin on the CPU, copied the updated bios using *.bio, inserted the disc. The

computer immediately booted when I plugged in the power supply. The Post got to 33. The

computer then rebooted and the cycle continues endlessly. The computer is reading the ROM

drive with the cd. I tried removing the video card. Same result. I tried unplugging the

LED, Power on etc. from the MB. Same result. I tried removing and installing only one RAM

card. Same result. I removed all the RAM same result except it hung at Post 27. I even

tried unplugging the HD. Same result. I removed and reinstalled the CPU. Same result.

I can't get the computer to reach the bios screen. I can't get it to stop booting as soon

as the PSU is plugged in. I can't get it to stop recycling.

Obviously I am not getting any video on the monitor.

Very frustrating. Any ideas?

More about : build bios issue

a c 435 V Motherboard
February 16, 2011 5:20:45 PM

Connect a speaker to the motherboard from the case, or use a separate tiny speaker that comes with new cases. Atatching the external speakers won't work. You need to hear some beep codes or lookup the 4H code in the motherboard manual. Should be listed at the back of the manual under troubleshooting. Then reset the bios using the cmos jumper or remove the board battery for a few seconds with the system off. The cmos jumper can be moved over one pin keeping 2 out of 3 pins covered, then return to original position. Reseat (reinstall) the following: ram, video card, and power supply 24 pin atx and 4 or 8 pin 12v lead to the motherboard. Disconnect all the optical and hardrives to see if you can get a post screen. If it appears, press an "f" key usually listed to enter the bios and set the boot order, save and exit. Then you can connect the drives, format, and install windows. Without a fresh install, windows usually recycles (reboots). It can't find the new motherboard drivers until you format and do a fresh install.
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February 23, 2011 12:24:22 PM

In searching the internet, I was surprised to see how many people had the exact same problem with this motherboard and the i5 CPU. In the end, with the CMOS jumper still off, I decided to pull the CMOS battery, wait a half hour, replace the battery and try to flash the bios with the latest version in *.bio format on a thumb drive connected directly to a USB port on the motherboard. It worked. Put the CMOS jumper back on and rebooted.
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