Ii Need Help With Xp Home

I have been trying to help my sister with her computer, But seems it is a mess and is confusing

When turn on the computer it seems to boot ok but the below errors show up so i click on OK

Welcome screen comes up i can click on a account name than nothing happens but the persons backround with no icons or taskbar and cannot even use the front botton to turn off the computer . So i cannot get access to the contents on hard drive.

If i could get it to boot up in dos from floppy and get access to c:\ i have 2 files i downloaded that might help fix the problem.They are VundoFix.exe and ComboFix.exe. which are currently on a usb thumb drive

My sister has alot of things on the hard drive she could not bear to loose (very important information along with family pictures and quite abit of music that she had bought.)

—————————————————————————————————————————————————

Important : Potential errors found in the system.

During a scan of files at system startup, potential errors in the system registry were found.

p-07-0100 irql: 1f SYSVER 0xff00024

NT_Kernel error 1256

KMODE_EXCEPTION_NOT_HANDLED

—————————————————————————————————————————————————

and/or

WXYZ.SYS Error Virus

———————————–————————————————————————————————————————————————————————

“A potential problem has been detected and Windows has been shutdown buggy application to prevent damage to your computer.

****WXYZ.SYS - Address F73120AE base at C00000, DateStamp 36b072A3

Kernel Debugger Using: COM2 (Port0×28f, Baud rate 192000)”

———————————–————————————————————————————————————————————————————————

If anyone can help it would make my day and my sisters day

What about booting up in safe mode? start the pc, after the vendor logo appears (Dell, Compaq, etc.,) but before windows actually begins to load hit the F8 key, choose to start the computer in safe mode and see what happens, you could also choose "last known good configuration" and see if that helps.