After I formatted it again to Vista Business by the DVD that came with the pc, my Compaq 6710b became extremely slow and the battery doesn't charge even if the charging indicator led is on. PLEAZ DO YOU HAVE ANY IDEA HOW IT HAPPENED OR HOW CAN I FIX IT?
This can be due to the CPU temperature or there might be a virus. Try to free up disk space as this can add the CPU speed.
If the battery doesn’t charge, you need to change it. When you reformat your laptop, you might have done something wrong that has altered the laptop system. Bring it back to the store to get it repair and do not try to fix it yourself.