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when I turn on my PC BIOS reports a checksum error and it loads defaults.
But, when I run Windows 98 eerything is ok.
It anoys me because I have to set my clock each time.
BIOS also reports I/O port error where my modem is,but modem is working great.Where is the problem?
1 Solution
any more info. exact error message please. any hardware changes lately (added ram, hard drive etc...)
Check your battery. Try leaving on then do a restart. Do you get the same message ? If not I'd suggest faulty motherboard battery so it's losing settings when powered down.
When BIOS mentions the port your modem is using, it probably means the COM port built into the motherboard and not the modem.  The modem might be taking the address of the COM port on the motherboard, and if so, that's where the confusion lies.

The bit about the clock always resetting is probably the battery, as mentioned already by wizard.
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The checksum error and clock reset is almost always a batter issue & is unrelated to the port error.

Magarity is on target with the modem/com port conflict.  You may just need to reset a dip switch on your modem for that error to go away
As suggested above, I would say your first step would be to replace the cmos battery and go from there.
The modem issue is related to the CMOS battery.

When that modem was installed in the system, the built in com ports that the modem is set to use was probably disabled.

Now, with the battery dieing, and CMOS defaults being loaded, it's setting that com port as "Active" again.

After you replace the battery, go into BIOS setup and disable that com port.

After you replace the battery before you go into BIOS to disable Com2.If necessary you can disable COM2 using Windows 95 or 98 etc.  From the Start menu select Settings and then Control Panel.  From the  Control Panel double click the System icon and then click the Device Manager tab. Click the + of the PORTS(COM&LPT).  If COM2 is listed, then click the + for the Modem and then double click the type of modem and then click the tab Resources and check the port address used and for any conflicts. If there is a conflict.  If there is a conflict find the conflicting port from the Ports(COM & LPT), select it and then click the Remove button in the Device Manager. Windows will display a Confirm Device Removal warning but click O.K. (You can always reinstall it using the Add/Remove hardware from the Control Panel).  After this you may need to check the modem address and the listbox should say No Conflicts.
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