₹40,000 for a 15-Machine School Lab
A school computer lab has 15 identical desktops: Intel Core i3-3220, 4 GB DDR3 RAM as two 2 GB sticks (both slots occupied), a 500 GB 7200 rpm hard disk, Windows 10 64-bit, and 18.5-inch monitors. Teachers report boot times of three to four minutes, and Word or Paint hanging whenever more than two applications are open. The lab has ₹40,000 for the whole upgrade and wants the largest measurable improvement. Local prices: 240 GB SATA SSD ₹1,800 each; 120 GB SSD ₹1,100; 4 GB DDR3 stick ₹1,300; 8 GB DDR3 stick ₹2,600. Two machines in the corner beep once at power-on and show no display. The lab also asks for 'a graphics card for AutoCAD'.
1. Recommend the single upgrade to buy first for all 15 machines, with arithmetic, and state what you deliberately leave out.
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Buy 15 × 240 GB SSD: 15 × ₹1,800 = ₹27,000, leaving ₹13,000.
The symptoms decide this. A three-to-four minute boot and applications hanging with two windows open on 4 GB of RAM are both dominated by the 7200 rpm mechanical disk: Windows 10 does heavy random reads at startup and pages to disk under memory pressure. Replacing the disk attacks both complaints at once. Extra RAM would reduce paging but would not touch the boot time, so it fixes only half the reported problem.
Why 240 GB rather than 120 GB: Windows 10 plus updates occupies roughly 25–30 GB, and student profiles, sample files and restore points grow. A 120 GB drive is cheaper (15 × ₹1,100 = ₹16,500) but risks filling up within a term, and a full SSD slows down and complicates imaging.
What to leave out: the graphics card (see the separate question). What to do with the ₹13,000: keep a contingency for cloning hardware or one spare SSD, because a single drive failure otherwise stalls the whole lab. RAM is the second-phase purchase, not part of phase one - and it must be bought as matched pairs, since both slots are already full with 2 GB sticks and adding a single 4 GB stick leaves an unbalanced 2+4 configuration.
2. A corner machine gives one short beep at power-on and no display. Explain how you would localise the fault across a lab of identical machines, and why a single beep is itself informative.
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On the AMI/Award-style BIOS used with this generation of board, one short beep normally means POST completed successfully. If POST passed and there is still no image, the fault is more likely in the display chain than on the motherboard - so start there rather than opening the cabinet.
Sequence:
- Move the machine's monitor and VGA cable to a known-good desktop. If the monitor works there, the monitor and cable are exonerated; if it does not, you have found the fault in one step.
- Swap a known-good monitor onto the faulty machine. An image appearing confirms the display fault.
- If still blank, reseat the RAM (remove, clean contacts, refit) and test the stick in another machine.
- Clear CMOS, then listen again and compare the beep pattern with the board manual - beep codes are vendor-specific and a 'single beep' on a different BIOS may mean a memory or video error.
The identical-machine lab is the real asset here: every part can be swapped against a known-good unit, which converts guesswork into a bisection. Record which serial number was moved where, or two broken machines become one.
3. How would you answer the request for 'a graphics card for AutoCAD' with this budget, and what would you verify before saying yes to any card?
Read the worked answer
The honest answer is no for all 15 machines, with reasons rather than a flat refusal.
Budget: at ₹27,000 already committed to SSDs, a discrete card at even ₹4,000 each would be ₹60,000 for the lab - one and a half times the entire allocation. The request cannot be met and must be negotiated, not quietly dropped.
Technical fit, if a card were ever considered: the i3-3220's integrated HD Graphics 2500 is weak, but 2D drafting in AutoCAD is CPU- and RAM-bound; the current 4 GB of RAM is a bigger obstacle than the missing GPU. A discrete card would also need a free PCIe x16 slot, a PSU with the right wattage and, on many cards, a 6-pin power connector that these OEM power supplies do not have, plus cabinet clearance.
Before approving any card I would verify: exact model and its TDP against the existing PSU rating, slot availability on the actual motherboard (some OEM boards have none free), cabinet length, and the AutoCAD version and workload - 2D only, or 3D modelling. If 3D is genuinely taught, the defensible proposal is one demonstration machine with a card and 8 GB RAM, not a lab-wide purchase.