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| Thread ID: 69969 | 2006-06-18 03:24:00 | BIOS checksum error | andy (473) | Press F1 |
| Post ID | Timestamp | Content | User | ||
| 464040 | 2006-06-18 03:24:00 | After upgrading one pc, I put the old Mobo and CPU into a new box for my daughter but it wont boot. Comes up with a message saying: "CMOS checksum error - defaults loaded. Warning! CPU has been changed or CPU ratio changed fail. Please re-enter CPU settings in the CMOS setup and remember to save before quit" That's what I can't figure how to do. The Mobo is a VIA P4PB-400 FL fitted with a Pentium P4 2.4G CPU and 1 x 512 DDR 400 RAM (new). The box came with a 450 watt PSU, and at the moment, that's all that's connected - no drives or peripherals. The board and CPU combo were working fine on a 350 watt PSU before. In the Bios setup, the only relevent page seems to be "Frequency/Voltage control". The options for the CPU with current settings are: CPU Vcore select.............Default CPU clock.......................100 It says that the current CPU voltage is 1.5volts There is a setting labelled "CPU clock ratio" in the manual, but it doesn't appear on screen. If I go to the BIOS Settings page "PC Health Status", the Vcore is shown as 1.48v. Can anyone shed any light on what's wrong and how I can possibly fix it please? Could I have damaged anything during the transfer between systems? I'm pretty careful about ESD issues and have checked all the jumpers and switches. I have reset the Bios to no effect. |
andy (473) | ||
| 464041 | 2006-06-18 03:37:00 | Maybe your CMOS battery is flat? Also the VIA site says the instructions for clearing the CMOS were wrong in the original manual.. |
gibler (49) | ||
| 464042 | 2006-06-18 04:11:00 | Thanks, but the battery is okay - I swapped it just in case but to no avail. Ditto with the power supply - new one made no difference. Strange thing is, if I make any change at all to the bios settings (or even no change) and do a "save and exit", the machine will not boot at all again until I clear the Bios settings again, and I did know about the error in the manual thanks. | andy (473) | ||
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