Up to now, on this computer, virtualbox was running (for three years) windows XP like a charm.
I am going to reinstall my XP vdi file and tell you as soon as possible if XP is running corectly.
For this test with window 7, I had reinstalled opensuse 13.2 (full clean install ) ( previously 13.1 )
HOST : Laptop HP DV9530 Intel Core Duo T5450 @ 1.66 GHz - FSB 828 MHz - 64 bits - 4Go Ram
Running Opensuse 13.2 64 bits
Guest : Windows 7 Pro 32 bits on virtualbox
Current test is using Oracle Virtualbox from virtualbox site :
and guest additions installed
Typo error : *.vdi files and not *.dvi
intel Core Duo T5450 does not support VT-x nor VT-d
My bios has no configuration for VT-x nor VT-d
Lact of support for VT-x might be a serious drawback.
I don’t know how well VBox runs in full emulation mode without CPU extensions.
I’d recommend you also try running VMware Player, although all current VMware products run best with and almost require VT-x as well, VMware was able to push the performance aspects of virtualization further than anyone else by a very long way before VT-x so might still run Guests better without those CPU extensions. If there is still no improvement, I’d also look for a “pre-VTx” version of Player… I don’t remember the last Player built with that architecture, I seem to remember something like Workstation 5.2.x might have been the last and in those days Player might have had the same versions as Workstation.
Using the windows 7 monitor, I found that my problem comes from microsoft “.NET”. “.Net” needs to compiles a lot of modules when a new version is installed. This use high cpu. So this make a VM running on a small machine like mine, not usable until this kind of task is finished.
A bit of advice,
Ordinarily and especially as in your case on a machine with limited resources you can delay (or never) install the latest dotNET framework. MS releases updates to install Frameworks very early relative to when coders actually build applications that use the framework so that machines are prepared for when they encounter those apps.