Well I have a Dell Inspiron 1525 and yesterday i downloaded the new software for itunes and when i restart my computer, it started having start up problems.
Now when I turn it on, it takes me to windows error recovery and asks to insert a windows installation cd which i don't have.
So I just press "last known good configuration(advanced)" then takes me to windows boot manager and I see.
File: \Windows\System32\Drivers\PxHelp20.sys

Status: 0xc0000098

Info: Windows failed to load because a critical system driver is missing, or corrupt.

Please help me fix this problem that doesn't involve erasing everything because I don't have a backup and don't want to lose everything I have.

If it involves downloading many things, its no problem since i have many blank cd's.
Thank you.