I'm not able to help all that much. I don't know why the GDI+Window icon is there or particularly what the process is about. Searching for '
gdi+' brings up quite a few listings but nothing about an icon in the Systray. Can't find anything about the '
Aspire Media Sync' specific phrase either, although it could possibly be something to do with the keyboard or mouse.
'PrinTray' is related to Lexmark printers. Like many bits of hardware, it likes to place an icon in the Systray on installation. It can be OK to disable it.
It's usually possible to track down these background processes and prevent them from starting as Windows does. Have a look in the 'System Configuration Utility' to see if anything related to the icons show up there: Go to, 'Start > Run'. Type '
msconfig' into the box and press Enter. Click on the 'Startup' tab (not 'Services'). See what you can find that might be to do with the processes. Untick the ones you don't want starting up.
The entries take a bit of studying but there's usually a clue to be found in the wording somewhere. If you are unsure about any entry, a Google for the exact term will often bring up an explanation of the process. Some sites will even give advice on whether a process should be shut down or not. When (if) you decide to try unticking a few things, restart the computer. On startup, a box will appear saying something about Windows running in diagnostic mode. There's a tick-box where you can place a tick so that the message won't show again. Once done, press OK. See how things go. If anything has stopped working as it should, processes can always be enabled again in msconfig.
Another place that can be looked at is '
services.msc' (type that into the 'Run' box). Some programs/processes can be disabled from there. See if there is anything that could be to do with the three icons showing in the Systray. Do a search on processes if necessary. Also, before disabling anything, you may like to look at the 'Safe' configuration column on this page (Black Viper's Services Configuration is well respected and referred to by many in computer forums):
http://www.majorgeeks.com/page.php?id=12
I've always set my computer up in accordance to this guide and never had any trouble. I note the page advises against disabling entries in msconfig but I have always done so with no ill-effects.**
No definite answers unfortunately but a few avenues to explore perhaps.
EDIT: **I think this advice possibly refers to the 'Services' tab specifically in msconfig, rather than the 'Startup' one. As the page says, services should be enabled/disabled using 'services.msc'.