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bad bios checksum

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#1
This infinite loop of checking floppy disk and cd rom happen when i was overclocking. When i power computer, everything goes on, all lights and fans.

I tried
-Move the cmos cap to pin 2,3 and put it back on after 10s. I also try take out mobo battery and put it back. All failed.
-Then i create a bootable floppy disk (only put in a P5LD2X.ROM). The first time computer doesn't recognize the disk.
I (blindly) mess with the little square switch at the corner (push down) and the computer recognize it but takes forever to read it. I turn off computer (this probably only make it worse) and when i power it one more time the computer doesn't recognize anymore.:cry:

Any help please? can i use afudos or crashfree bios 2?
 
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#2
someone please reply
 

tigger

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#3
Does that board have dual bios?
 
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#4
dual bios means 2 bios chips? if so then i think it's a single bios.
 

sneekypeet

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#5
Wow I should just stop posting today. Looks like the Crash free bios wont recover from a bad flash... http://vip.asus.com/forum/view.aspx...d_id=1&model=P4S800D-X&page=1&SLanguage=en-us

Now the question is: Is the bios chip socketed or soldered directly to the motherboard? I assume I need to look and verify this?

I just looked at the one on newegg... http://www.newegg.com/Product/ShowI...ription=ASUS P5LD2 R2.0 ATX Intel Motherboard

If that is your board, you could simply get a new bios chip from ASUS or http://www.biosman.com/
 
Last edited:
Joined
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Messages
529 (0.16/day)
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Processor i3-4160
Motherboard msi z97 pcmate
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Memory 8gb ballistix
Video Card(s) evga 750 ti ftw
Storage samsung ssd 120gb + 1tb samsung
Case 210 elite
Power Supply evga 500w
Software Win 7 ultimate 64bit
#6

sneekypeet

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Display(s) Sony 43" 4K 60hz
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Audio Device(s) Realtek on board > Sony Receiver > Cerwin Vega's
Power Supply Thermaltake TPSG 1050W
Mouse Always Changing
Keyboard Always Changing
Software Windows 10 Pro 64
#7
from what I read the issue is internal in the bios chip. The number of the bios you attempted to flash isn't corresponding to the bios chips recognition of the last checksum it saved.

There may be other alternatives with flashing, never tried it to a corrupted chip myself. Getting a new bios chip will get you passed the checksum issue though.