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Overclocked too far - computer will not boot

I recently tried overclocking my desktop and I went a bit too far. The machine no longer gets to the screen that allows me to enter the bios. I tried switching the CPU but this did not work, it still will not let me get to the bios. Is there any way to fix this?

What steps do you take when overclocking?

When overclocking your system? what steps do you take to get a maximum but stable overclock out of your system?

I've personally just slammed up the FSB speed until my system can't run Prime95 for a long time. Should I be doing more with memory/voltages?

Hyper Threading vs Overclocking

What is the difference between these two, and under what circumstances would I want to implement them? Are there circumstances when I would only want 1 and not the other?

According to Wikipedia, hyperthreading is a proprietary Intel technology, whereas overclocking seems to apply to any CPU (Intel or other).

But still, they both seem like very similar ways of speeding up processing time on the same machine, and I wonder if they are synonyms or mutually-redundant.

Water cooling a PC, is it really expensive?

I recently read an article saying you can overclock an i5 750 to perform almost as well as a core i7 975 extreme (factory settings). But obviously this requires some serious cooling.

Is installing a water cooling solution expensive and complicated?

I would like to start trying out new stuff, but I have very little knowledge on overclocking and cooling.

Is possible to overclock a SSD?

Anyone already had tried to or knows if it is possible to implement in some way an overclock an SSD (or get the same benefits by tunning some parameter on an SSD)?

Why are modern CPUs "underclocked"?

I keep reading since years about magical overclockability of modern CPUs. It is said that CPUs (with open multiplier) which are shipped to customers with (let's say) preset 3GHz, can be overclocked "without problems" to (let's say) 4GHz.

But I can't believe that CPU manufacturers are fooling themselves. I am thinking: should a CPU always support 1GHz higher clock rate without problems, why not sell such CPU with 1GHz more preset?

Would you say, that my assumption is correct, that in fact there are lot of problems with overclocking, and for that reason, modern CPUs are preset to lower frequencies (compared to those they could handle)?

1.35 V RAM in a 1.5 V system - Will it fry or overclock?

The general question is:
When installing low voltage RAM in a board that outputs a higher voltage to the memory module, will this fry the RAM or will it be like overclocking it?

My specific case is:
I have the Alienware m17xR3 laptop with a 2630QM Sandy Bridge board. Currently, I have the stock 1.5 V modules and when I check the overclocking options in my bios, the RAM voltage option ranges from 1.5 - 1.65 V. Is this simply because the bios recognizes that these are the values which my current RAM support and thus they will change when I install 1.35 V RAM or will I have to run the 1.35 V sticks at minimum 1.5 V?

If the case is the latter, would I fry my 1.35 V sticks? Or would they become automatically overclocked and get tighter timings with a higher voltage? Or both? Or neither? I'm a bit lost :p

Will overclocking your PC with no internet access screw up the system time?

Let's say you have a PC which is not connected to a time server, so it has no external methods of keeping track of time. You turn the machine on, and set the time and date in the BIOS.

Then you overclock said PC. Will the time run faster than usual because of the faster CPU cycles?

Is overclocking legal? [closed]

Is overclocking your CPU and GPU classified as being legal ? If so, why don't manufacturers make overclocking easier so that just about anyone is able to play around with it ? - at own risk of course.

Is there an equivalent of Memtest86 for CPUs? [closed]

I need an easy way to do system stability tests. I have come to rely on Prime95 which does a fantastic job of proving stability (or instability) very quickly; but it requires an OS installed.

I would like something like Prime95 that stresses both CPU and RAM (maybe PCI-Ex bus also?) but runs in a nice bootable binary like Memtest86+ does, so I can boot it from a thumbdrive.

Does such a thing exist?

What is overclocking the system?

I have heard this term many time and would like to know what does it exactly means?

How to overclock an ATI/AMD graphic card further than Overdrive allows?

I've got a fresh HD 6850 overclocked to 850 MHz with OverDrive.

I heard its possible to run it at 1000 MHz but how?

Please don't educate me about the risks of overclocking!

Is overclocking RAM worth it? [closed]

I am going to purchase a motherboard that supports up to DDR3 2400(O.C.). I have seen things saying that overclocking RAM is not worth it. Is it worth it to buy memory that is rated for DDR3 2400 and overclock it or should I just buy DDR3 1600 (the highest non-overclocked memory rating that the motherboard supports)?

Are there noticeable performance gains when you overclock to DDR3 2400? (Note that I have already gone for more obvious performance gains such as using an SSD).

The use case for this machine will be gaming and programming.

Maximum CPU Temperature for Core 2 Duo E6400

What is considered to be the highest safe CPU temperature when overclocking?

I have a Core 2 Duo E6400 overclocked to 2.85GHz with 1.2vCore. This runs at 29C idle and 45C under load. These temperatures are captured using Speed Fan and PC Probe.

I know these temperatures are fine, but if I want to push it to over 3.0GHz what sort of maximum temperature limit should I set?

Thanks,
Gary

Memory modules not running at rated speeds

I'm having some odd memory issues with my build. Here are my specifications right now:

• QDI Superb 4 motherboard
• Intel Pentium 4 Northwood 2.4 GHz (512 KB L2, 533 MHz FSB)
• 3x 256 MB PC2100 DDR266 RAM
• 16 MB NVIDIA TNT2 Pro AGP
• Seagate 80 GB IDE HDD
• Generic USB 2.0 PCI
• Generic Modem PCI
• Bestec 250 W PSU

To be even more specific, here are the current brands and models of each module:

• Kingston KVR266X64C25/256
• Samsung PC2100U-25331-Z
• SMART SM5643285D4N0CHM0H

Supposedly, they are all PC2100 266 MHz modules with a latency of 2.5. Looking in Speccy, the Kingston module is somehow running at a speed of PC2300 ~284 MHz. I've never overclocked RAM at all as I don't know how to.

However, when I first started the computer, I had the SMART module in place first and then reset the BIOS settings, including the integrated overclocking options. However, this still doesn't explain why the Kingston module runs at a higher speed than the SMART and Samsung module.

Why is it like this? On a side note, where could I find the motherboard manual for the QDI Superb 4?