Kaspersky and Sophos Antivirus deleted explorer.exe. My Laptop won't reboot.

hello everybody..

Yesterday i just bought myself Kaspersky PURE for my laptop. 15 Euro. With License Key.

....long story short....

After i installed it, i scanned my laptop. At that time i noticed that some files named explorer.exe were in the Quarantine and being cleaned/deleted. Like always, it asked me then to restart my laptop to complete the process. So i just did it!!!.

This is when the **** happened. While rebooting, it went to the Windows Boot Manager. I had two choice which are 'Launch Start Up Repair' or 'Start Windows Normally'.

So i went with 'Start Windows Normally'. But the laptop rebooted itself once more and went to the windows boot manager again. So i had no choice and this time i chose 'Launch Start Up Repair', which lead me to 'System Restore'

The System Restore just restored my laptop to the point, just before i installed my Kaspersky!!! So i lost my 15 Euro antivirus in a blink!!!.

It's okay. It is only 15 Euro right? Not so expensive.

Then i got myself another antivirus named Sophos from my university. Each student will get one license for it. So i forgot about the Kaspersky and went with Sophos.

This is when the 2nd **** happened. Sophos just did exactly like what Kaspersky has done. Sophos scanned my laptop ---> detected explorer.exe --> put in quarantine ---> explorer.exe was being cleaned/deleted ---> asked me to reboot laptop ---> the laptop went to Windows Boot Manager --- i had no choice but to restore my laptop ----> now my laptop at the point b4 Sophos was installed in my laptop ----> I LOST MY SOPHOS!!!!!


please some genius out there... help me with a long description.. i do read whatever u write.

Thank a million times.
so what should i do???? buy another antivirus and lost it once again????