A short circuit would have properly broken something as in hosed the PC beyond repair.
Create a new System Restore point before you do anything.
Get yourself a USB thumbdrive that you can use for downloading the following drivers to.
The drivers that you should download and install from here are in the order that they should be installed.
(1) Chipset.
(2) SATA.
(3) VGA.
(4) Wireless.
Post back with an update after installing the drivers and restarting the PC a couple of times.
Create a new System Restore point before you do anything.
Get yourself a USB thumbdrive that you can use for downloading the following drivers to.
The drivers that you should download and install from here are in the order that they should be installed.
(1) Chipset.
(2) SATA.
(3) VGA.
(4) Wireless.
Post back with an update after installing the drivers and restarting the PC a couple of times.
Comment