No.
No.
The system would behave as it did when you first purchased it without the nasty malware. My advice, if you can afford it buy a cheap low cost laptop.
1. original ... mgr + 0.5m(2√rg)2 = 0.5mv2
2. divide both sides by 0.5m... (mgr / 0.5m) + (0.5m(2√rg)2 / 0.5m) = v2
3. result ... (gr / 0.5) + (2√rg)2 = v2
4. rearrange ... gr + (2√rg)2 = 0.5v2
I haven't touched physics & maths for 11 years since i left university with a masters...