i am getting the following message on boot up
I have checked the hard drive and it is o.k it boots up fine in another p.c--it wont even boot up in safe mode.
There are a few likely possibilities.
One is a memory error. This can be tested using MemTest86.
Another is a BIOS error, corruption. This can be cleared by following the instructions in your motherboard manual.
A third possibility is a USB error. Try unplugging all the USB devices or hubs plugged into the computer's USB port and boot it again.