How do I know if my laptop has a virus or just needs a replacement battery ?

Question

I have an hp envy dv6-7210 model 
6gb 
well I just installed a new yearly anti virus protection recently 
but here's what its doing. 
Its been getting hot lately where the heat almost burns you
& it runs on for about 15 minutes then the screen goes black & turns off
im not getting no blue screen & no code in the top corner thats why im thinking it just needs a new battery. Its about 2 yrs old. 
It will power up again each time but turns off quicker each time too. 
I know its not my power supply cord either cause im using that one on a different laptop right now & its just fine. 
I cant decide to just sell it & go for an hp 8gb or try buying a battery 1st off  of ebay but its weird cause the prices range from $32-$132 that look like the same thing so idk what the difference is either
thanks & please no negative answers

Bassman1 · Accepted Answer

Over heating is caused by blocked cooling vents, fan going bad or out, using a laptop on a soft surface causing the cooling vents to be blocked.
A battery does not cause over heating, if it charging to full 100% and holding the charge and runs a except-able time then it does not need replacing.
Laptops have a safety built in so when they over heat they shut down in a matter of minutes or longer depending on how fast it over heats.
Blow the dust and lint out using canned compressed air made for cleaning electronic, check. the fan for running. Replace fan if needed and clean dust and lint out of case.

starpc11 · Answer

Sounds like a internal hardware problem than a battery problem, check to make sure the vents are not block of dust , might need to have the inside of the laptop clean of dust and check out by a pc repair shop, run speed fan and check the event logs for issues

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How do I know if my laptop has a virus or just needs a replacement battery ?

2 Answers