Sell or you will be frowned upon, nevermind the repairs...
I used to work for one of the busiest PCW stores in the UK (Junction 9 M6) I started out quite happily as christmas staff, and after being pushed and told I was good at doing technical jobs (I am qualified - although it was wasted at pc world)
I found myself in a world of not being able to see a repair through... Not being able to complete healthchecks on time (stick a disc in and run it my ass - they still hadnt got it workin when i left!)
Amongst my technical duties was ensuring that the place looked tidy despite being a working area, dealing with typical dumbass questions at the counter from people who should quite frankly not be allowed within 500 ft of a computer, missing my lunch break and ensuring everyone else had theirs on time, doing meet and greet (MEET AND FUCKING GREET HELLO WELCOME TO THE STORE) for 1 hour, 2 hours, 3 hours if the sales people couldnt be arsed doing it, and also selling PC's and advising salespeople on "whether this pc is capable of playing games".
I occassionally picked up a screwdriver, but usually had to quickly put it back in its protective sleeve before the managers noticed id actually been doing my job, or face the wrath for not being a multitasking person, god forbid I should sit down whilst I am installing a graphics card in a £200 machine sold to someone to play Doom 3 and Quake 4 at 300fps, rant over.
PC world sucks, they sell 15p USB cables to the public at £15 a pop, and I still have access to reports that I really shouldnt have access to showing the cost price of every item they sell, its appalling. Ask for discount.
Screw PC World!!!