This is the 2nd PCS computer I have purchased. Ordered and delivered in 3-4 days, started it up and set UK location, language and keyboard, a day later it failed to 'recognise' my keyboard, this was after using the keyboard for the initial setup, after trying several USB sockets I found the one that it 'liked', for a while. Then I noticed the system time was out, a usual sign that the BIOS battery is failing, but this was a new machine, I later found out it had some how set itself to Canadian time. After ringing PCS I was asked to remove the BIOS battery and re-insert it but no change to the time, I couldn't log into Windows as the keyboard problem was back to enable me to get at the system control panels. I then found out you can get a virtual keyboard (ease of access) up at the login screen, use your mouse to enter a pin or password and get into Windows and that Windows sometimes turns on Sticky Keys, an ease of access feature that can cause problems and it did, all these problem disappeared after turning them off. I bought another keyboard, this worked fine for 2 days then the computer started beeping at start up, one long beep, a space then 3 short beeps and the computer wouldn't go any further on the start up, the internet 'said' that's showing a memory 'fail', but PCS advised me that it is a generic signal and could mean anything, so on request I removed the graphics card and re-inserted it, no change. I was using a 'new' Display Port cable (the graphics card has 3 DP and one HDMI outlet), no problems in the past, then on the verge of organising a return I decided to try a HDMI cable and hey presto the system started as normal ! I have always used Display Port rather than HDMI, after a couple of days I switched back to Display Port and the computer is fine BUT it still beeps at starting up, one long a space then 3 short beeps but on switching to the right cable source on the monitor the computer works as normal and has been so far.