This has been interesting to read... god being a veteran really makes you feel that giggle feeling while reading this thread..
I am opening a computer repair shop soon, moving up ^^ lol
My tips'
- Screwdrivers - non-magnetic is best however some that have specific coatings on them are soso I got a kit from ASUS they gave it me for buying so much of their stuff lol...
- Anti-Static Mat - I got this from ASUS again lol they gave it me... these are very useful for working on hard drives like screwing them into a caddy type thing or removable rackmount rack, as well as other anti-static related things.
- Keep spare parts, PSU with SLI/Crossfire support minimum 550W at least 750 is good, Motherboard.... basically a whole near modern spec system so that you can use your KNOWING WORKING parts possibly in a testing rig and test their(your clients) components (make sure the memory is compatible with your board dont push) and have a few legacy memory sticks around just in case...
- Always Read The Manual (ARTM), sounds funny coming from a veteran but you need to know your way around their boards and components... mainly the mobo as sometimes you need to find the correct jumper (some have more than 1 in the obvious location sometimes not clearly marked too) do a simple search on google to find the manual from the Original Manufacturer as well as any BIOS updates BIOS UPDATES SHOULD ONLY BE USED AT EXTREME CIRCUMSTANCES!!!, dont just do it because its newer.
- umm can not think of more right now too hungry... Oh yeah... Make sure you have had enough body fuel (FOOD) and less drink, you dont want to be sweating over someones board specially not if its more than your contigency budget, oh yeah have a budget in place in case you genuinely break their components, this is good business practice, pretending something was broken all along when they know it was working does not look good on your relationships with clients, PEOPLE TALK! back to the food it will ensure you have a level and clear mind to focus on all aspects of what you are doing with that system, and allows you to thing laterally rather than linearly.
All in All, keep a clear focus and ensure you take every precaution not to p**s off a client EVER!
Hope this was of some help
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