I am no computer engineer should I replace my dis-functioning hardware driver or just get a new computer?. Which one of your hardware drivers is "dis-functioning"?Hello  thanks for your reply I should have mentioned I have a dell Inspiron 530 and the hard drive is needing replaced I only know this from the dell diagnosis I ran on the computer today. So my main problem is I have no sound coming from the computer even though the Realtek sound driver is GOOD.This is from dictation.
You say that something is wrong with your computer hardware. Please be more specific. Are you having trouble with a hard disk drive? Do you think your motherboard is overheating?
Is there something wrong with a video display? Have you recently added more hardware to your computer? Did you add unnecessary software to your computer?  Especially software that claims it can improve the performance of your software but in reality does NOTHING of the sort.
About buying a new computer. New computers are about $300 on up, unless you want to get just a very simple device that will log on to the Internet and not do much more. Are you talking about a laptop? Laptops are hard to repair. If you have a DESKTOP computer, the possibility of doing a suitable repair are very good if you can find the specific problem.
For people that are not mechanically inclined, or are afraid of trying to repair ELECTRONIC equipment, the better solution is to buy a used computer without the monitor and keyboard. This usually costs less and the shipping cost is much less because of the weight and size of the monitor. Is your monitor in good condition? If so, buying a used certified computer might be the best way to improve your computer experience.
But more details are needed before anyone here can give you good advice.
Many thanks for your reply. I myself think the best solution is to do the later part of your answer, as I said, I am no computer mechanic, the Screen moniter and key board and mouse all ok. I just believe that when you start opening computers then one problem can then lead to another if  you do something wrong.Kind regards firemountain.certified refurbished PC
The above is a Google search. There really are companies that rebuild and cerify used computers returned from big business firms.
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and the hard drive is needing replaced I only know this from the dell diagnosis I ran on the computer

So my main problem is I have no sound coming from the computer even though the Realtek sound driver is good.