I have the HP ProBook 4510s running Windows Vista Basic and I've been experiencing a lot of lag especially while trying watch a video (audio not synchronized with video & very choppy). I have followed your advice and have ran malware bytes in safe mode, I've ran Defrager, CCleaner and what not. I've even ran every diagnostic test in the start-up menu. Everything seems to come back ok yet my pc is obviously having issues. I would be open to wipe it and start from scratch but I would like to first know if there's any way to transfer Pinnacle from my pc onto a dvd as I lost the installation cds. Oh, and also the battery wont charge. Any help would be appreciated. TIA