XP1800+ Very High Temperatures

ok here's the problem

Ambient temperature has been between 35-39C (39C NOW)

Temperatures when Idle (CPU/MB) 55/35
Temperatures at full load 70/40 (never kept working on the pc when it was this high)

it's an AMD 1800+(not overclocked), asus A7V266E, Radeon 7500, Volcano 7 HSF, 2 80mm case fans(1 in the back, 1 in the front).
I have already done the bios tweak(the one that reduces the temp by almost 8C).
Thx for the help.

Man... those are high. Try reseating ur heatsink if you havent done it already. Open the side of the case and see what happenes then.

hmm..i will try that after i change the psu(http://forum.oc-forums.com/vb/showthread.php?s=&threadid=114060)

But y would it need reseating if my temps were ok in winter?
In winter the cpu temp was 38-40C idle and 50-53C on full load... i guess it might have moved a little out of place..
thx for the reply.

PS: btw, those temps r with the case cover open

Your ambient temp is to high to begin with. it should be in the low to mid 20s if you want to get your cpu temp to a respectable level.

It has been incredibly hot this week, and the room is directly hit by the sun for around 8 hours a day.

whats the bios tweak? does it only work on your board?