REPAIRS AND UPGRADES

On occasion, the fault can be a result of a hardware problem, and not related to any infectious virus, item of malware / spyware or some mis-behaving program.

In most cases, it can be a relatively straightforward process to replace the defective hardware part, and get you up and running with the minimum of delay.

PSU PROBLEMS
The most common problem which arises is the failure of the Power Supply (or PSU).  This is basically where the Power lead plug into the back of the machine.

Obviously the most common sign is a total lack of, well, anything really.  But this is only one aspect.  It is possible for the power supply to actually fire up the machine but be in the early stages of failure.

Failure of the power supply can occur over a period of time, with system lockups and crashes occurring with increasing frequency.

COMPUTER MEMORY
A similar story arises with computer memory.
A common misconception is to confuse memory with hard disk space.  A machine may indicate that it is running low on system memory, which is different to the amount of space left on the hard drive.
Deleting programs and files normally has a minimal effect of resolving this issue.

It is better to describe the memory as actual thinking power, as opposed to program and file space.

With the actual price of computer memory being relatively cheap, it is by far the best option in order to speed up your machine, and avoid problems.

RUNNING OUT OF SPACE
Again, not an uncommon problem, particularly with older machines.  A full, or nearly full hard drive can have performance implications on the entire system  With modern techniques, it has become relatively easy to transfer the entire contents of a small drive to a larger, faster and more efficient one.

WHEN ITS TIME TO CALL IT A DAY !!
Sometimes, following an assessment of the machine, its age and its usage, it becomes apparent that it is no longer economically viable to perform any more work on the machine, and there is little else to do except bite the bullet and invest in another one.